fix comment

diff --git a/cmake/checks/check_01_cxx_features.cmake b/cmake/checks/check_01_cxx_features.cmake
index 88b5ed654178e569c47a3e3b5bb2fc45c0b78135..db34a492602131329f19ba5454743c9f650bc8a3 100644 (file)
--- a/cmake/checks/check_01_cxx_features.cmake
+++ b/cmake/checks/check_01_cxx_features.cmake
@@ -291,7 +291,9 @@ _test_cxx17_support()
 
 
 #
-# In the following we have to avoid
+# Some compilers are too generous in accepting some of the language
+# features that we test below and do not issue an error but a warning. Set
+# -Werror to make the feature detection more reliable.
 #
 SET(_werror_flag "")
 IF(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")